General
Suggested installation orientation is with
valve shaft horizontal or inclined from vertical.
Unless otherwise recommended by emerson
Valves & Controls, mount the valve in the
preferred direction with the direc tional arrow
pointing to the lower pres sure side so that the
front face of the disc will be upstream when the
valve is in the closed position.
Thermal insulation of the body is man datory for
operating temperatures above 392°F [200°C].
K-LOK offers the following body styles:
wafer - Series 360 and 370, lug/single
flange - Series 362 and 372.
CaUTIOn
The valve should be installed in the closed
position to insure that the seat and disc are
not damaged during installation. Particular
care should be taken with valves equipped with
“fail open” actuators. Failure to insure proper
handling may result in damage to the valve.
If the pipe is lined, confirm that the disc rotation
does not contact the lining during the opening
stroke. Failure to confirm that the disc rotation
does not contact the lining may result in damage
to the valve.
IMPOrTanT
Whenever possible, install the valve with the shaft
in the horizontal position and, if possible, with the
cast-in disc stop located top-side of the pipe. If the
shaft cannot be positioned horizontally, position
the shaft so that it is not on the vertical centerline
in a horizontal pipe run. This will minimize any
depositing of solid particles present in the fluid
into the lower bearing.
Before installation these instructions must be fully read and understood
KeysTOne
K-LOK
®
SerieS 360/362 and 370/372
InstallatIon, operatIon, MaIntenance and troubleshootIng
InsPeCTIOn
1. Carefully remove the valve from the
shipping package (box or pallet) to avoid
any damage to the valve and, in the
case of automated valves, to the electric
or pneumatic/hydraulic actuator or
instrumentation.
2. Prior to installation, clean the inside of the
valve. insure that there are no solid objects
such as pieces of wood, plastic or packing
materials within the valve or on the valve
seat.
3. inspect the seat and disc edge to insure that
they were not damaged in handling. This is
especially important in the case of valves
with “fail-open” actuators.
VCIOM-02831-Us 14/12
4. Confirm that the materials of construction
listed on the valve nameplate are
appropriate for the service intended and are
as specified.
5. Locate the directional arrow on the body
that defines the preferred mounting
orientation in respect to the pressure. in
most cases, the valve is properly installed
when the actual fluid flow or high pressure
is acting on the front face of the disc when
the valve is closed.
6. ensure that the packing gland bolting nuts
are tight.
InsTallaTIOn
The valves are shipped with flange gasket
surface protection. Before installing the valve,
remove the protection and carefully clean and
de-grease both surfaces with a solvent.
lug series - series 362 and 372
1. Orient the valve with the directional flow
arrow (preferred direction) pointing in the
proper direction.
2. insert the valve between the flanges until
the two bottom holes in the valve align with
the two lower flange holes.
3. insert a bolt or stud through the flange and
thread it into the holes in the valve body.
This will allow the valve to center itself
properly for the installation of the flange
gaskets.
4. install the flange gaskets and the remaining
flange bolting.
5. Use the crossover method to tighten all
flange bolting.
Emerson.com/FinalControl
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